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ERROR > Session has expired !

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13 years 5 months ago #68686 by Maximilien
ERROR > Session has expired ! was created by Maximilien
Hi Guys,

I have just migrated limesurvey from one server to another. Same configuration for both servers but a big issue with my survey.

When executing the survey after passing 2 groups of question I get a wonderful :

ERROR

We are sorry but your session has expired.

Either you have been inactive for too long, you have cookies disabled for your browser, or there were problems with your connection.

Please contact Geengo Surveys ( foo@bar.com ) for further assistance.


So that's when the survey is activated. Now when I test the survey while not activated, I pass through 4 of the 5 groups of questions, and when clicking on the "Next" button of the 4th group... I get redirected to the surveys listing (the public index of surveys) while I should go to the last group of questions. Weird, isn't it ?

I spent a couple of hours searching the web and the forum for solutions (I found some bugs that looked quite similar but the proposed solutions would never work), checked several times my php.ini, upgraded to the very last built of limesurvey (Version 1.91+ Build 11343) but it simply won't work ! And I really have no clue why...

Any idea that could help me ?

Thanks in advance,

Kind regards,
Maximilien
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13 years 5 months ago #68891 by Mazi
Replied by Mazi on topic ERROR > Session has expired !
I'm pretty sure that there are differences at the server configuration because the session problems are mainly caused by certain server settings.

Please upload a phpinfo file so we can take a look at your server configuration. Just put the following code into a file named phpinfo.php and upload it to your webserver:
Code:
< ?php phpinfo(); ? >
(Delete the spaces next to </> when copying the code.)
After uploading please post the link to the file.
Best regards/Beste Grüße,
Dr. Marcel Minke
survey-consulting.com
offlinesurveys.com
Feel free to contact me by email for professional LimeSurvey support!
The following user(s) said Thank You: Maximilien
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13 years 5 months ago #68982 by Maximilien
Replied by Maximilien on topic ERROR > Session has expired !
Here is a link to the phpinfo.
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13 years 5 months ago - 13 years 5 months ago #68986 by DenisChenu
Replied by DenisChenu on topic ERROR > Session has expired !
Hello,

You have suhosin, starting to test without ( suhosin.simulation ) to see if it that.

Here is may suhosin configuration:
Code:
suhosin.apc_bug_workaround  Off  Off
suhosin.cookie.checkraddr  0  0
suhosin.cookie.cryptdocroot  On  On
suhosin.cookie.cryptkey  [ protected ]  [ protected ]
suhosin.cookie.cryptlist  no value  no value
suhosin.cookie.cryptraddr  0  0
suhosin.cookie.cryptua  On  On
suhosin.cookie.disallow_nul  1  1
suhosin.cookie.disallow_ws  1  1
suhosin.cookie.encrypt  Off  Off
suhosin.cookie.max_array_depth  50  50
suhosin.cookie.max_array_index_length  64  64
suhosin.cookie.max_name_length  64  64
suhosin.cookie.max_totalname_length  256  256
suhosin.cookie.max_value_length  10000  10000
suhosin.cookie.max_vars  100  100
suhosin.cookie.plainlist  no value  no value
suhosin.coredump  Off  Off
suhosin.disable.display_errors  Off  Off
suhosin.executor.allow_symlink  Off  Off
suhosin.executor.disable_emodifier  Off  Off
suhosin.executor.disable_eval  Off  Off
suhosin.executor.eval.blacklist  no value  no value
suhosin.executor.eval.whitelist  no value  no value
suhosin.executor.func.blacklist  no value  no value
suhosin.executor.func.whitelist  no value  no value
suhosin.executor.include.allow_writable_files  On  On
suhosin.executor.include.blacklist  no value  no value
suhosin.executor.include.max_traversal  4  4
suhosin.executor.include.whitelist  no value  no value
suhosin.executor.max_depth  0  0
suhosin.filter.action  no value  no value
suhosin.get.disallow_nul  1  1
suhosin.get.disallow_ws  0  0
suhosin.get.max_array_depth  50  50
suhosin.get.max_array_index_length  64  64
suhosin.get.max_name_length  64  64
suhosin.get.max_totalname_length  256  256
suhosin.get.max_value_length  512  512
suhosin.get.max_vars  100  100
suhosin.log.file  0  0
suhosin.log.file.name  no value  no value
suhosin.log.phpscript  0  0
suhosin.log.phpscript.is_safe  Off  Off
suhosin.log.phpscript.name  no value  no value
suhosin.log.sapi  0  0
suhosin.log.script  0  0
suhosin.log.script.name  no value  no value
suhosin.log.syslog  479  479
suhosin.log.syslog.facility  no value  no value
suhosin.log.syslog.priority  no value  no value
suhosin.log.use-x-forwarded-for  Off  Off
suhosin.mail.protect  2  2
suhosin.memory_limit  256M  256M
suhosin.mt_srand.ignore  On  On
suhosin.multiheader  Off  Off
suhosin.perdir  0  0
suhosin.post.disallow_nul  1  1
suhosin.post.disallow_ws  0  0
suhosin.post.max_array_depth  8048  8048
suhosin.post.max_array_index_length  1024  1024
suhosin.post.max_name_length  2048  2048
suhosin.post.max_totalname_length  8048  8048
suhosin.post.max_value_length  1000000  1000000
suhosin.post.max_vars  4096  4096
suhosin.protectkey  On  On
suhosin.request.disallow_nul  1  1
suhosin.request.disallow_ws  0  0
suhosin.request.max_array_depth  4096  4096
suhosin.request.max_array_index_length  2048  2048
suhosin.request.max_totalname_length  256  256
suhosin.request.max_value_length  650000  650000
suhosin.request.max_varname_length  64  64
suhosin.request.max_vars  4096  4096
suhosin.server.encode  On  On
suhosin.server.strip  On  On
suhosin.session.checkraddr  0  0
suhosin.session.cryptdocroot  On  On
suhosin.session.cryptkey  [ protected ]  [ protected ]
suhosin.session.cryptraddr  0  0
suhosin.session.cryptua  Off  Off
suhosin.session.encrypt  On  On
suhosin.session.max_id_length  128  128
suhosin.simulation  Off  Off
suhosin.sql.bailout_on_error  Off  Off
suhosin.sql.comment  0  0
suhosin.sql.multiselect  0  0
suhosin.sql.opencomment  0  0
suhosin.sql.union  0  0
suhosin.sql.user_postfix  no value  no value
suhosin.sql.user_prefix  no value  no value
suhosin.srand.ignore  On  On
suhosin.stealth  On  On
suhosin.upload.disallow_binary  0  0
suhosin.upload.disallow_elf  1  1
suhosin.upload.max_uploads  30  30
suhosin.upload.remove_binary  0  0
suhosin.upload.verification_script  no value  no value
Assistance on LimeSurvey forum and LimeSurvey core development are on my free time.
I'm not a LimeSurvey GmbH member. - Professional support - Plugins, theme and development .
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Last edit: 13 years 5 months ago by DenisChenu. Reason: quote to code
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13 years 5 months ago - 13 years 5 months ago #69012 by Maximilien
Replied by Maximilien on topic [SOLVED] Re: ERROR > Session has expired ! - Suhosin configuration
A damn good answer !

So I set up the simulation mode on suhosin, activated the logs via the /etc/php5/apache2/conf.d/suhosin.ini file :
Code:
suhosin.log.sapi = 511
suhosin.simulation = off

(of course you need to reload apache2 for the configuration to be taken into account)

I did the survey, it worked and I checked my syslog. It had several errors on the max number of post variables (ALERT-SIMULATION - configured POST variable limit exceeded). So I took a configuration suitable for Magento's product :
Code:
suhosin.mail.protect = 0
suhosin.memory_limit = 128
suhosin.post.max_value_length = 5000000
suhosin.post.max_vars = 5000
suhosin.request.max_value_length = 5000000
suhosin.request.max_vars = 5000

Which basically means that it allows 5 times more post variables and requests. I switched off the simulation mode and it's clean and working !

Thank you so much Shnoulle.
Last edit: 13 years 5 months ago by Maximilien. Reason: Changing subject of the post (Solved)
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13 years 5 months ago #69014 by Mazi
Replied by Mazi on topic ERROR > Session has expired !
suhosin is known for causing such problems. Try switching it off for testing or adjust those settings according th shnoulle's examples.
Best regards/Beste Grüße,
Dr. Marcel Minke
survey-consulting.com
offlinesurveys.com
Feel free to contact me by email for professional LimeSurvey support!
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13 years 5 months ago - 13 years 5 months ago #69021 by DenisChenu
Replied by DenisChenu on topic [SOLVED] Re: ERROR > Session has expired ! - Suhosin configuration

Maximilien wrote: Thank you so much Shnoulle.

Thank's to you,

I have already some problem with max post and get, i use a cms ( Spip ) with a lot of ajax function.

And Ajax function need a lot of GET parameters.

I have 2 configuration for suhosin : one for protected project like LS/Spip etc ... and another one for no preotected projetc ( personal draft, old open source project etc ...)

I think we found the solution for suhosin with LimeSurvey:
Code:
suhosin.post.max_value_length = 5000000
suhosin.post.max_vars = 5000
suhosin.request.max_value_length = 5000000
suhosin.request.max_vars = 5000
But maybe less is good too :).

Denis

PS: wikified : docs.limesurvey.org/Installation+FAQ#Lim...on_has_expired_quot_ before Mazi asking :P
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I don't answer to private message.
Last edit: 13 years 5 months ago by DenisChenu.
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13 years 5 months ago #69026 by Maximilien
Replied by Maximilien on topic [SOLVED] Re: ERROR > Session has expired ! - Suhosin configuration
Yep, it looks good with those values, the correct value must be somewhere between 1 and 5 but I think 5 (5000 and 5000000) is still protective and keeps Limesurvey working fine...

I will stay on 5 for the moment :p
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13 years 5 months ago #69037 by Mazi
Replied by Mazi on topic [SOLVED] Re: ERROR > Session has expired ! - Suhosin configuration
Guys, can you please add these helpful instructions at the installation FAQ so other will benefit from your findings as well!?

Thanks!
Best regards/Beste Grüße,
Dr. Marcel Minke
survey-consulting.com
offlinesurveys.com
Feel free to contact me by email for professional LimeSurvey support!
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13 years 5 months ago #69040 by Maximilien
Replied by Maximilien on topic [SOLVED] Re: ERROR > Session has expired ! - Suhosin configuration
There was already something, but I completed to that anyone should understand and search robots should index it so that's it's easier to find.
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13 years 5 months ago #69044 by DenisChenu
Replied by DenisChenu on topic [SOLVED] Re: ERROR > Session has expired ! - Suhosin configuration

Mazi wrote: Guys, can you please add these helpful instructions at the <a href=' www.docs.limesurvey.org/tiki-index.php?p...tions+for+LimeSurvey '>installation FAQ so other will benefit from your findings as well!?

Thanks!

Shnoulle wrote: PS: wikified : docs.limesurvey.org/Installation+FAQ#Lim...on_has_expired_quot_ before Mazi asking :P

:P
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I don't answer to private message.
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13 years 5 months ago #69047 by Maximilien
Replied by Maximilien on topic [SOLVED] Re: ERROR > Session has expired ! - Suhosin configuration
Wow, that was fast ! And it explains why I didn't see anything before my initial question and discovered that when Mazi told about explaining it in the FAQ :)

Well done Shnoulle ;-)
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